package com.ruoyi.common.redis.configure;

import org.springframework.boot.autoconfigure.cache.CacheProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.CacheKeyPrefix;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@EnableConfigurationProperties(CacheProperties.class)//开启属性绑定配置的功能
@Configuration //配置类
@EnableCaching //开启缓存功能
public class MyCacheConfig {
    @Bean
    RedisCacheConfiguration redisCacheConfiguration(CacheProperties cacheProperties){
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();
        config= config.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()));
        /**
         * GenericFastJsonRedisSerializer   fastjson家族的
         * GenericJackson2JsonRedisSerializer   spring自带的 package org.springframework.data.redis.serializer;
         */
        //指定序列化-Jackson
//        config = config.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));
        //指定序列化-fastjson
        config= config.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new FastJson2JsonRedisSerializer(Object.class)));


        //从所以配置中取出redis的配置
        CacheProperties.Redis redisProperties = cacheProperties.getRedis();
        //将配置文件中所有的配置都生效（之间从源码里面拷 RedisCacheConfiguration）
        if (redisProperties.getTimeToLive() != null) {
            config = config.entryTtl(redisProperties.getTimeToLive());
        }
        if (redisProperties.getKeyPrefix() != null) {
            config = config.prefixKeysWith(redisProperties.getKeyPrefix());
        }
        if (!redisProperties.isCacheNullValues()) {
            config = config.disableCachingNullValues();
        }
        if (!redisProperties.isUseKeyPrefix()) {
            config = config.disableKeyPrefix();
        }
        config = config.computePrefixWith(cacheKeyPrefix(cacheProperties));
        return config;
    }
    @Bean
    public CacheKeyPrefix cacheKeyPrefix(CacheProperties cacheProperties) {
        return new CacheKeyPrefix() {
            @Override
            public String compute(String cacheName) {
                StringBuilder sBuilder = new StringBuilder(100);
                sBuilder.append(cacheProperties.getRedis().getKeyPrefix());
                sBuilder.append(cacheName).append("::");
                return sBuilder.toString();
            }
        };

    }
}
